from rest_framework import serializersfrom .models import Areaclass AreaSerializer(serializers.ModelSerializer):    """如果此时是查询 所有的省,所有的省数据就用此序列化器    """    class Meta:        model = Area        fields = ['id', 'name']class SubsAreaSerializer(serializers.ModelSerializer):    """如果是查询单个省 或单个市时,就用此序列化器"""    subs = AreaSerializer(many=True)    class Meta:        model = Area        fields = ['id', 'name', 'subs']